Crushing and grinding mill



(No Model.) 2 Sheets-Sheet 2..

J. 1 WINGHELL. RUSHING AND GRINDING MILL.

` Pate'nt'eduJune 28, 1887.

NiTnD STATES PATENT Ormea JAMES F. W'INOHELL, OF SPRINGFIELD, OHIO.

CRUSHING AND GRINDING lVlILL.

SPECIFICATION forming part of Letters Patent No. 365,717, dated June 28,1887.

l Application filed September 18, 1886. Serial 'No.rl. (No model.)4

To all whom, it may concern:

Be it known that I, .Lunas F. WrNci-IELL, a citizen ofthe United States,residing at Springfield, in the county of Clark and State ofOhio, haveinvented certain new and useful Improvements in Crushing and GrindingMills, of which the following is a specification, reference being hadtherein to the accompanying drawings.

This invention relates to certain new and useful improvements incrushing and grinding mills, and it consists, first, in means formounting one of the stationary grinding-plates in such a manner that itmay be adjusted to secure alignment with the rotary grinding-plate whichco-operates with it and still be held to the casing of the mill, nomatter what may be the adjusted position; second, in means for securingthe rotarygrinding-plates to a grinding-wheel mounted upon the mainshaft of the mili; and, third, in means foradj usting first one of therotary grindingplates with respect to one of the stationarygrinding-plates, and for next adjusting the other stationarygrinding-plate with respect to the other rotary grinding plate, bothadjustments being accomplished through a common screw, all ashereinafter more specifically set forth and claimed.

In the accompanying drawings, forming a part of this specification, andon which similar letters of reference indicate the same or correspondingfeatures, Figure 1 represents a plan view of the lower half of the mainportion of the mill-casing, and also shows the operating parts mountedtherein, partly in section; Fig. 2, an enlarged sectional view of aportion of the casing and the means for adjusting and holding one of thestationary grinding-plates; Fig. 3, a sectional view of another portionof the casing, showing the manner of mounting one of the yoke-supports;Fig. 4, a side eleva-v tion of one of the rotary grinding-plates,showing the manner of mounting the saine; Fig. 5, a like view ofthe rotarygrinding-wheel with the grinding-'plate removed; Fig. 6, apartial viewofthe grinding-wheel and one of the clamps; Fig. 7, a plan view incontinuation of Fig.1, but on a smaller scale; and Fig. 8, an enlargedsectional view of the grinding plates, the grinding-wheel, one of theclamps, and thc several devices in immediate juxtaposition therewith.

The letter A designates a suitable framework,upon which the casing ismounted, and the letter B the casing, the same being preferablyconstructed of cast-iron,and consisting of a crushing chamber, C, agririding-chamber,

D, and being otherwise substantially like the casing illustrated anddescribed in Letters Patent No. 342,158, May 18, 1886. This casing isprovided with journal-boxes E, F, and F', in each of which asuitablebushing of Babbitt metal is fitted.

At G the casing is provided with an aperture coincident with theaperture in the upper portion of the casing, (a fragment of which isshown at H in Fig. 8.) These portions of the casing-are also channeledat I, to receive one end ofthe yoke-supports J, which terminate incrossheads fitting the said apertures. Vhen the two portions of thecasing are secured together, these supports are firmly held, and uponthem is mounted ayoke, K, andadouble set of nuts, L and M, serve to holdthe yoke upon the supports wherever adj usted, as also to allow ofadjusting the yoke back and forth, as by unscrewing one set of nuts andadvancing the` other toward them. The purpose of thus adjusting the yokewill be presently explained.

A standard, N, extending from the yoke carries an L-shaped latch or dog,O,which serves to lock the adj usting-wheel P by engaging one or theother of its notches.

The letter Q designates a sleeve fitted to the Babbitt bushing F, and isconstructed to move back and forth, but not to rotate, and is formed onits inner end with a disk, R, the face of which is provided with anannular bead, T, as also with an annular recess, U, and with aperturesto receive the bolts V. To this disk is secured enc of the stationarygrinding-plates W by means of the bolts V, the heads of the bolts beingcountersunk, so as to be flush with the face ofthe grinding-plate. Thisplate is in the form of an annulus, the inner periphery of which extendssomewhat into the annular recess U in the disk R, While the face X ofsaid annulus is provided with a series of grinding teeth orprotuberances. The outerend of said IOO to the thread in the yokeAK--say a left-hand thread and the yoke a right-hand thread, both beingof the same or about the same pitch. The sleeve further carries aBabbitt or other bushing, b, to which is fitted one portion of themill-shaft c, another portion having a bearing iuv the bushing E. Thisshaft carries a crusher, d, of any approved construction-as, forinstance, of the kind illustrated in Letters Patent granted to me, asabove mentioned. This Crusher also acts as a conveyer to convey thecrushed material to the grinding-plates. Upon this shaft is also mountedwhat I tcrina gri riding-wheel,77 e. (Shown more clearlyin Fig. 5.) Thewheel is constructed with aseries of, say, four recesses, f, in the rimthereof, and with holes g .running from said recesses outwardly throughthe rim, the recesses being for the reception of the heads of the boltsh. These bolts pass through clamps fi, and are provided withjam andbinding nuts j. The inner faces of the clamps are provided with grooves7c, the outer walls of which are inclined, as seen in Fig. 1, while therotary grinding-plates are constructed with segmental lugs Z, the outerfaces of which incline to agree with the outer walls of the grooves 7c,and are fitted to said grooves. These plates are of annular form, andare provided with annular rims or surfaces m, which agree with likesurfaces a, formed on either side ofthe rim of the wheel e.

The rotary grinding-'plates are placed with these surfaces against thoseon the rim, and by operating the nuts on the bolts 7L the clamps i aredrawn centrally and impinge tightly against the lugs l on the rotarygrinding-plates. These plates are provided with a series ofgrindingteeth or protuberances upon their surfaces opposite therespective stationary grinding-plates.

It will be observed that by the meansjust described the rotarygrinding-plates are rmly yet detachably secured to the grinding-wheel.The stationary plate W is constructed like the plate V, but isdifferently secured. Bolts o--one preferably at. either side, in aboutthe saine horizontal plane as the axis of the main shaft, and onebeneath said shaft and near the bottom of the plate (not shown)-arefitted to screw-threaded bushings p, which in turn are fitted tothreaded apertures in the casing B, and are provided with jam-nuts q.The inner ends of the bushings form shoulders, against which the plateWV is held by the bolts 0, and by turning the bushings the plate isadjusted back and forth to the proper position to secure alignment withthe adjacent rotary grindingplate, the jam-nut g serving to hold thebushing to any adjusted position.

The letter r designates afwasher, and s an anti-frictionwearing-plateinterposed between the mill-shaftcandtheadjusting-screwt.This screw is provided with right and left hand threads to fit,respectively, the threads in the yoke K and in the nutZ. j

I will now refer to the uses of the yoke K,

the screw t, the wheel P, and the nut a in respect' to adjusting thegrinding-surfaces with proper relation to each other.l In the firstplace, the shaft c, with the grinding-wheel and the rotarygrinding-plates, is placed in its bearings, as also the sleeve Q, thedisk B, the stationary grinding-plates WV and Wand secured in place. Thefirst adjustment to be effected is that between the nonrotatinggrindingplate W and therotary gri nding-plate adjacent to it. This isdone by operating the adjustingwheel l and rotating the screw t, toallow the shaft c to move in the direction of the adjusting-wheel underthe influence of the spring or of gravity, as will presently appear, itbeing understood that the first relative position between thenon-rotating grinding-plate WV and the adjacent rotary grinding-plate iswith a space between them. i When the `main shaft shall have moved inthe direction just indicated far enough to bringthe rotary grindingplatethe proper distance-from the non-rotating grinding-plate NV, the wheel Pis stopped andthe dog O dropped into one ofits notches.

The remaining adjustment to be effected is that between the other rotarygrinding-plate and the non-rotating grinding-plate W. This is done byturning the nuts L away from the yoke K, and then turning the nuts Magainst that yoke and forcing the screw t, the main shaft, thegrinding-wheel, the plates attached to it, the non-rotating-plate W, thedisk B,the sleeve Q, and the nut a toward the stationary plate YV. Thisaction of the yoke is, continued until the proper relative positionbetween the non-rotating grinding-plate W and the adjacent rotarygrinding-plate is obtained, when the nuls L are screwed against the yoketo hold it. adjustment does not disturb the adjustment previously madebetween the plate W and the adjacent rotary grinding-plate.4 Theadjustment between the non-rotatinggrindingplate NV and its rotarygrinding-plate,asjust described, is only made when the machine is setup. The subsequent adjustment between each non-rotating grinding-plateand its adjacent rotary grinding-plate is effected in the followingmanner:

Let it be supposed that a space of one-sixteenth of an inch existsbetween the respective non-rotating grinding-plates and the rotarygrinding-plates, and that it is desired to grind the material morefinely. The adjustingwheel P is rotated in the direction of the ar- 'rowand the screw t turned in the yoke K, which moves the shaft c away fromthe yoke, and also carries with it the sleeve Q, by reason of the bodilyadvance of the screw t. `Vhen the space between the non-rotatinggrindingplate Wand its adjacent rotary grinding-plate has been taken up,the space between the nonrotating grinding-plate NV andits adjacentrotary grinding-plate will also have been taken up, notwithstanding thatthese latter two plates both move in the same direction under thein- Itshould be noted that this latterV IOO IIO

fluence ofthe screw t, operating'from the yoke K. Vhen, however, thishas taken place, the action of the screw t in t'ne nut a, by reason ofthe left-handed threads, moves the sleeve and its disk and thenon-rotating grinding-plate "W an additional one-sixteenth of an inchindependent ofthe movement of the shaft c, thereby closing this spacebetween lthe non rotating grinding-plate W and its adjacent plate,although both move one-sixteenth of an inch during the closing` of thespace between the non-rotating grinding-plate V and its rotary plate.

As seen in Fig. 7, the main shaft is provided with a y-wheel, a, and adriving-pulley, '0. A spiral spring is interposed between the hub ofthedriving-pulley and thejournal-box, for the purpose ot' forcing theoperating-shaft normally in the direction ofthe non-rotatinggrinding-plate NV.

It will be no tieed from Figs. l, 4, and 5 that the position of thesides of the spokes e of the wheel e is oblique to the axis ofthe mainshaft. The object of this arrangement is to cause the spokes toact asconveyers,to assist in drawing the material to be ground from thegrindingplates adjacent to the crushing-chamber to those at the oppositeside of the wheel. The space between the spokes, the rim, and the huballows the passage ofthe material; but to be thoroughly effective thereshould be something to act upon the material. This action isaccomplished by the spokes.`

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, .is-

1. In a grinding-mill, thec'ombination, with the non-rotatinggrinding-plates and rotating grinding-plates, of a screw having rightand lefthandcd threads, a nut connected with one ofthe non-rotatingplates, and with which one of said threads engages, a support having athread with which the other thread on the screw engages, and means foractuating said screw.

2. In amill,the combination,with thenon rotating grinding-plates and therotating grinding-plates, a shaft upon which the latter plates aremounted, and means, substantially as de scribed, for urging said shaftin the direction of one of said non-rotatinggrinding-plates, ofa screwhaving a right and left hand thread, a nut connected with thenon-rotating plate toward which the shaft tends, and with which one ofthe said threads engages, a support having a thread with which the otherthread on the screw engages, and means to rotate said screw.

3. In agrinding-mill, the combination, with the frame, two non-rotatinggrinding-plates and two rotating grinding-plates, and a`shai`t uponwhich the latter plates are mounted, and means, vsubstantially as setforth, for pressing the said shaft in the direction of one of thenon-rotating plates, of a screw having a right and left hand thread, asleeve having a nut and a disk connected with the non-rotating platetoward which the shaft tends, a yoke supported by the frame, and an adjListing-wheel mounted on said screw, one of the threads of thescrewbeing iitted to the yoke and the other to said nut.

4. In a grinding-mill, the combination of the twonon-rotatinggrinding-plates, the sleeve to which one of said plates isattached, and having a nut, a shaft, means for urging said shaft towardthe last-mentioned plate, a wheel mounted rigidly thereon, rotatinggrindingplates secured to said wheel, and a right and left hand threadedscrew, a notched adjustingwheel, a yoke supported by the mill-casing,the said screw being mounted in said yoke and said nut, the whole beingconstructed to permit of the adjustment between one of the rotatinggrinding-plates and one of the nonrotating grinding-plates by actuatingthe screw and the adjustment between the other rotating plate and nonrttating plate by operating the yoke.

5. In a grinding-mill, the combinatiomwith the non-rotating plates,shaft-bearings, a shaft,

and rotating grinding-plates, of a commonv adjusting-screw, a threadedbearing for said screw, having a fixed relation to one ofthe nonrotatingplates, and an adjustable threaded bearing, with which said screwengages,whereby upon moving theadjustable bearing the adjustment betweenone ofthe non-rotating plates and one of the rotating plates iseffected, and n pon rotating said screw the adjustment between the othernon-rotating plate and the other rotating plate is eifected.

G. In a grinding-mill, the combinatiomwith IOO the main shaft, a wheelrigidly mounted thereon, and clamps carried by said wheel, ofgrinding-plates fitted against said wheel and held thereto by saidclamps.

, 7. In a grinding-mill, the combination, with the main shaft and awheel rigidly mounted thereon, its rim recessed and bored, and groovedclampshaving inclined walls, ofgrind ing-plates fitted against said rim,segmental lugs with tapering sides extending from said plates and iittedinto said grooves, and bolts to bind the clamps against the said lugs.

18.' In a grinding-mill, the combination, with a frame, shaft-bearingsthereon, a longitudinally-movable shaft, rotating grinding-platesmounted thereon, and non-rotating grindingplates, of a doublethreadedscrew connected with one of said non-rotating plates and tted to actagainst said shaft, threaded bearings for said screw, and means torotate it, whereby its rotation adjusts all the said plates with properrelation to each other.

9. In a grinding-mill, the combination, with the feed-chamber, the mainshaft, a wheel mounted thereon and having the sides of its spokes placedobliquely toits axis, and grinding-plates secured to said wheel, andhaving feed-openings through them, of non-rotating plates, one of whichhas an opening through it, the openings in the plates beingsubstantially opposite thespaoe between the spokesmhereby Wheel,rotating grinding-plates secured to said the material in being fed canpass from one set of Wheel, and stationary `gfrinding-plates, one ofgrinding-plates to the other set of grindingthem having a feed-openingopposite the replates through the action of the spokes. spectiverotating plates.

10. In agrinding-mii1,the combination, with t In testimon7 whereof Iaffix my signature in the easing having a chamber from which thepresence of two Witnesses. material is fed, of the grinders, ashaftmounted Y in Said chamber, a conveyor mounted on the JAMES F" VVINCHELL'shaft and within said chamber, a Wheel mounted on the shaft, and havingspokes the sides of which are obliquely disposed to the axis of the\Vitnesses:

M. A. BALLrNGER, EDWIN L. BRADFoRD.

